PROTOZOANS

\pɹˈə͡ʊtə͡ʊzˌə͡ʊnz], \pɹˈə‍ʊtə‍ʊzˌə‍ʊnz], \p_ɹ_ˈəʊ_t_əʊ_z_ˌəʊ_n_z]\
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2010 - Medical Dictionary Database
By DataStellar Co., Ltd
 
1874 - Etymological and pronouncing dictionary of the English language
By Stormonth, James, Phelp, P. H.